As Facebook turned ten years old last month, a legal case it brought against Power Ventures almost six years ago demonstrates the continued hurdles facing developers who seek to empower users to interact with closed services like Facebook in new and creative ways. In a new amicus brief, we caution the Ninth Circuit Court of Appeals not to extend crippling civil and criminal liability on services that provide competing or follow-on innovation.

As the popularity of Bitcoins has increased, government officials are concerned about criminal activity associated with the virtual currency. But a recent subpoena issued by the New Jersey Division of Consumer Affairs to 19-year-old Bitcoin developer and MIT student Jeremy Rubin goes too far, and we're fighting back by moving to quash it.

One year ago, we lost Aaron Swartz, a dear friend and a leader in the fight for a free and open Internet. The shock was, and remains, a profound one. It's a testament to the power of his commitments and ideals that both in life and in death he has inspired millions around the world, including all of us at EFF, to redouble our own efforts to advance the causes that he believed in, and to untangle the twisted and brutal computer crime laws that were used to persecute him.

Aaron was a passionate activist, but he also stood out as a technologist whose ambitions were always aligned towards a better, more just future. His pioneering work demonstrated a passion for harnessing technology to advance the public interest. As the Internet community confronted massive new challenges to free speech and privacy in 2013, there were many moments when we wondered quietly about what Aaron would have said and done.

As the year draws to a close, EFF is looking back at the major trends influencing digital rights in 2013 and discussing where we are in the fight for free expression, innovation, fair use, and privacy. Click here to read other blog posts in this series.